Geothermal Power Plant Cycles And Main Components | Electrical Seminar Topic
Geothermal Power Plant Cycles And Main Components
Geothermal power plants can be divided into two main groups,
steam cycles and binary cycles. Typically the steam cycles are used at higher
well enthalpies, and binary cycles for lower enthalpies.
The steam cycles allow
the fluid to boil, and then the steam is separated from the brine and expanded
in a turbine. Usually the brine is rejected to the environment (re-injected),
or it is flashed again at a lower pressure. Here the Single Flash (SF) and
Double Flash (DF) cycles will be presented.
A binary cycle uses a secondary working fluid in a closed
power generation cycle. A heat exchanger is used to transfer heat from the
geothermal fluid to the working fluid, and the cooled brine is then rejected to
the environment or re-injected. The Organic Rankine Cycle (ORC) and Kalina
cycle will be presented.
